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   <div id="projectname">NATS C Client with Streaming support
   &#160;<span id="projectnumber">2.5.0</span>
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<div class="title">libevent.h</div>  </div>
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<a href="libevent_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">// Copyright 2016-2018 The NATS Authors</span></div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">// Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">// you may not use this file except in compliance with the License.</span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">// You may obtain a copy of the License at</span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">//</span></div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">//</span></div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">// Unless required by applicable law or agreed to in writing, software</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">// distributed under the License is distributed on an &quot;AS IS&quot; BASIS,</span></div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment">// See the License for the specific language governing permissions and</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment">// limitations under the License.</span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;</div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor">#ifndef LIBEVENT_H_</span></div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="preprocessor">#define LIBEVENT_H_</span></div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;</div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="preprocessor">#ifdef __cplusplus</span></div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="keyword">extern</span> <span class="stringliteral">&quot;C&quot;</span> {</div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;</div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor">#include &lt;event.h&gt;</span></div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#include &lt;event2/thread.h&gt;</span></div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="preprocessor">#include &quot;../nats.h&quot;</span></div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;</div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="keyword">typedef</span> <span class="keyword">struct</span></div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;{</div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;    <a class="code" href="group__types_group.html#gaf88dca0a18efb5c5e994d265a9f04aec">natsConnection</a>      *nc;</div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;    <span class="keyword">struct </span>event_base   *loop;</div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;    <span class="keyword">struct </span>event        *read;</div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;    <span class="keyword">struct </span>event        *write;</div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;    <span class="keyword">struct </span>event        *keepActive;</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;} natsLibeventEvents;</div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="comment">// Forward declarations</span></div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<a class="code" href="status_8h.html#a36c934157b663b7b5fb5d6609c897c80">natsStatus</a> <a class="code" href="group__libevent_functions.html#ga8a14ce23b4f6ba3bf63369961f9a5552">natsLibevent_Read</a>(<span class="keywordtype">void</span> *userData, <span class="keywordtype">bool</span> add);</div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<a class="code" href="status_8h.html#a36c934157b663b7b5fb5d6609c897c80">natsStatus</a> <a class="code" href="group__libevent_functions.html#gaac76f5937329a8650f69c6bd8af36cd5">natsLibevent_Detach</a>(<span class="keywordtype">void</span> *userData);</div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;</div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="keywordtype">void</span></div><div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="group__libevent_functions.html#ga195d269473332931fd0fede0bac3309e">   58</a></span>&#160;<a class="code" href="group__libevent_functions.html#ga195d269473332931fd0fede0bac3309e">natsLibevent_Init</a>(<span class="keywordtype">void</span>)</div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;{</div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;<span class="preprocessor">#if _WIN32</span></div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;    evthread_use_windows_threads();</div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;<span class="preprocessor">#else</span></div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;    evthread_use_pthreads();</div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;}</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;natsLibevent_ProcessEvent(evutil_socket_t fd, <span class="keywordtype">short</span> event, <span class="keywordtype">void</span> *arg)</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;{</div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;    natsLibeventEvents *nle = (natsLibeventEvents*) arg;</div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;    <span class="keywordflow">if</span> (event &amp; EV_READ)</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;        <a class="code" href="group__conn_mgt_group.html#gaa89c06e30e19ff361125bfc9114d89a8">natsConnection_ProcessReadEvent</a>(nle-&gt;nc);</div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;    <span class="keywordflow">if</span> (event &amp; EV_WRITE)</div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;        <a class="code" href="group__conn_mgt_group.html#gad81b603b84c0180aefc6d5ebad7f2a47">natsConnection_ProcessWriteEvent</a>(nle-&gt;nc);</div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;}</div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;keepAliveCb(evutil_socket_t fd, <span class="keywordtype">short</span> flags, <span class="keywordtype">void</span> * arg)</div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;{</div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;    <span class="comment">// do nothing...</span></div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;}</div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;</div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<a class="code" href="status_8h.html#a36c934157b663b7b5fb5d6609c897c80">natsStatus</a></div><div class="line"><a name="l00098"></a><span class="lineno"><a class="line" href="group__libevent_functions.html#ga30c00f21a5251ee9fde09c1f2b429cd2">   98</a></span>&#160;<a class="code" href="group__libevent_functions.html#ga30c00f21a5251ee9fde09c1f2b429cd2">natsLibevent_Attach</a>(<span class="keywordtype">void</span> **userData, <span class="keywordtype">void</span> *loop, <a class="code" href="group__types_group.html#gaf88dca0a18efb5c5e994d265a9f04aec">natsConnection</a> *nc, <a class="code" href="nats_8h.html#af798865ac824e5959987de0fe8d07383">natsSock</a> socket)</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;{</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;    <span class="keyword">struct </span>event_base   *libeventLoop = (<span class="keyword">struct </span>event_base*) loop;</div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;    natsLibeventEvents  *nle          = (natsLibeventEvents*) (*userData);</div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;    <a class="code" href="status_8h.html#a36c934157b663b7b5fb5d6609c897c80">natsStatus</a>          s             = <a class="code" href="status_8h.html#a36c934157b663b7b5fb5d6609c897c80a9cee6c417868ecaa69f99ff4f6576990">NATS_OK</a>;</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;</div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;    <span class="comment">// This is the first attach (when reconnecting, nle will be non-NULL).</span></div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;    <span class="keywordflow">if</span> (nle == NULL)</div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;    {</div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;        nle = (natsLibeventEvents*) calloc(1, <span class="keyword">sizeof</span>(natsLibeventEvents));</div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;        <span class="keywordflow">if</span> (nle == NULL)</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;            <span class="keywordflow">return</span> <a class="code" href="status_8h.html#a36c934157b663b7b5fb5d6609c897c80a62ff6f5cc64399631defc0119731b514">NATS_NO_MEMORY</a>;</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;        nle-&gt;nc   = nc;</div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;        nle-&gt;loop = libeventLoop;</div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;</div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;        nle-&gt;keepActive = event_new(nle-&gt;loop, -1, EV_PERSIST, keepAliveCb, NULL);</div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;        <span class="keywordflow">if</span> (nle-&gt;keepActive == NULL)</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;            s = <a class="code" href="status_8h.html#a36c934157b663b7b5fb5d6609c897c80a62ff6f5cc64399631defc0119731b514">NATS_NO_MEMORY</a>;</div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;        <span class="keywordflow">if</span> (s == <a class="code" href="status_8h.html#a36c934157b663b7b5fb5d6609c897c80a9cee6c417868ecaa69f99ff4f6576990">NATS_OK</a>)</div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;        {</div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;            <span class="keyword">struct </span>timeval timeout;</div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;            timeout.tv_sec = 100000;</div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;            timeout.tv_usec = 0;</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;            <span class="keywordflow">if</span> (event_add(nle-&gt;keepActive, &amp;timeout) != 0)</div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;                s = <a class="code" href="status_8h.html#a36c934157b663b7b5fb5d6609c897c80a40a08ae6ae17deaf390b1d0d7550791c">NATS_ERR</a>;</div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;        }</div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;    }</div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;    <span class="keywordflow">else</span></div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;    {</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;        <span class="keywordflow">if</span> (nle-&gt;read != NULL)</div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;        {</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;            event_free(nle-&gt;read);</div><div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;            nle-&gt;read = NULL;</div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;        }</div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;        <span class="keywordflow">if</span> (nle-&gt;write != NULL)</div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;        {</div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;            event_free(nle-&gt;write);</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;            nle-&gt;write = NULL;</div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;        }</div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;    }</div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;</div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;    <span class="keywordflow">if</span> (s == <a class="code" href="status_8h.html#a36c934157b663b7b5fb5d6609c897c80a9cee6c417868ecaa69f99ff4f6576990">NATS_OK</a>)</div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;    {</div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;        nle-&gt;read = event_new(nle-&gt;loop, socket, EV_READ|EV_PERSIST,</div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;                              natsLibevent_ProcessEvent, (<span class="keywordtype">void</span>*) nle);</div><div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;        <a class="code" href="group__libevent_functions.html#ga8a14ce23b4f6ba3bf63369961f9a5552">natsLibevent_Read</a>((<span class="keywordtype">void</span>*) nle, <span class="keyword">true</span>);</div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;</div><div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;        nle-&gt;write = event_new(nle-&gt;loop, socket, EV_WRITE|EV_PERSIST,</div><div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;                               natsLibevent_ProcessEvent, (<span class="keywordtype">void</span>*) nle);</div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;    }</div><div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;</div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;    <span class="keywordflow">if</span> (s == <a class="code" href="status_8h.html#a36c934157b663b7b5fb5d6609c897c80a9cee6c417868ecaa69f99ff4f6576990">NATS_OK</a>)</div><div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;        *userData = (<span class="keywordtype">void</span>*) nle;</div><div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;    <span class="keywordflow">else</span></div><div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;        <a class="code" href="group__libevent_functions.html#gaac76f5937329a8650f69c6bd8af36cd5">natsLibevent_Detach</a>((<span class="keywordtype">void</span>*) nle);</div><div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;</div><div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;    <span class="keywordflow">return</span> s;</div><div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;}</div><div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;</div><div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;<a class="code" href="status_8h.html#a36c934157b663b7b5fb5d6609c897c80">natsStatus</a></div><div class="line"><a name="l00170"></a><span class="lineno"><a class="line" href="group__libevent_functions.html#ga8a14ce23b4f6ba3bf63369961f9a5552">  170</a></span>&#160;<a class="code" href="group__libevent_functions.html#ga8a14ce23b4f6ba3bf63369961f9a5552">natsLibevent_Read</a>(<span class="keywordtype">void</span> *userData, <span class="keywordtype">bool</span> add)</div><div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;{</div><div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;    natsLibeventEvents  *nle = (natsLibeventEvents*) userData;</div><div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;    <span class="keywordtype">int</span>                 res;</div><div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;</div><div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;    <span class="keywordflow">if</span> (add)</div><div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;        res = event_add(nle-&gt;read, NULL);</div><div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;    <span class="keywordflow">else</span></div><div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;        res = event_del_noblock(nle-&gt;read);</div><div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;</div><div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;    <span class="keywordflow">return</span> (res == 0 ? <a class="code" href="status_8h.html#a36c934157b663b7b5fb5d6609c897c80a9cee6c417868ecaa69f99ff4f6576990">NATS_OK</a> : <a class="code" href="status_8h.html#a36c934157b663b7b5fb5d6609c897c80a40a08ae6ae17deaf390b1d0d7550791c">NATS_ERR</a>);</div><div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;}</div><div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;</div><div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;<a class="code" href="status_8h.html#a36c934157b663b7b5fb5d6609c897c80">natsStatus</a></div><div class="line"><a name="l00192"></a><span class="lineno"><a class="line" href="group__libevent_functions.html#ga7ac99f326a59e5663ff66f5023c87091">  192</a></span>&#160;<a class="code" href="group__libevent_functions.html#ga7ac99f326a59e5663ff66f5023c87091">natsLibevent_Write</a>(<span class="keywordtype">void</span> *userData, <span class="keywordtype">bool</span> add)</div><div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;{</div><div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;    natsLibeventEvents  *nle = (natsLibeventEvents*) userData;</div><div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;    <span class="keywordtype">int</span>                 res;</div><div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;</div><div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;    <span class="keywordflow">if</span> (add)</div><div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;        res = event_add(nle-&gt;write, NULL);</div><div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;    <span class="keywordflow">else</span></div><div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;        res = event_del_noblock(nle-&gt;write);</div><div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;</div><div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;    <span class="keywordflow">return</span> (res == 0 ? <a class="code" href="status_8h.html#a36c934157b663b7b5fb5d6609c897c80a9cee6c417868ecaa69f99ff4f6576990">NATS_OK</a> : <a class="code" href="status_8h.html#a36c934157b663b7b5fb5d6609c897c80a40a08ae6ae17deaf390b1d0d7550791c">NATS_ERR</a>);</div><div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;}</div><div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;</div><div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;<a class="code" href="status_8h.html#a36c934157b663b7b5fb5d6609c897c80">natsStatus</a></div><div class="line"><a name="l00214"></a><span class="lineno"><a class="line" href="group__libevent_functions.html#gaac76f5937329a8650f69c6bd8af36cd5">  214</a></span>&#160;<a class="code" href="group__libevent_functions.html#gaac76f5937329a8650f69c6bd8af36cd5">natsLibevent_Detach</a>(<span class="keywordtype">void</span> *userData)</div><div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;{</div><div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;    natsLibeventEvents *nle = (natsLibeventEvents*) userData;</div><div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;</div><div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;    <span class="keywordflow">if</span> (nle-&gt;read != NULL)</div><div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;        event_free(nle-&gt;read);</div><div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;    <span class="keywordflow">if</span> (nle-&gt;write != NULL)</div><div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;        event_free(nle-&gt;write);</div><div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;    <span class="keywordflow">if</span> (nle-&gt;keepActive != NULL)</div><div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;    {</div><div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;        event_active(nle-&gt;keepActive, 0, 0);</div><div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;        event_free(nle-&gt;keepActive);</div><div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;    }</div><div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;</div><div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;    free(nle);</div><div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;</div><div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="status_8h.html#a36c934157b663b7b5fb5d6609c897c80a9cee6c417868ecaa69f99ff4f6576990">NATS_OK</a>;</div><div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;}</div><div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160; <span class="comment">// end of libeventFunctions</span></div><div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;</div><div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;<span class="preprocessor">#ifdef __cplusplus</span></div><div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;}</div><div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;</div><div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* LIBEVENT_H_ */</span><span class="preprocessor"></span></div><div class="ttc" id="status_8h_html_a36c934157b663b7b5fb5d6609c897c80a62ff6f5cc64399631defc0119731b514"><div class="ttname"><a href="status_8h.html#a36c934157b663b7b5fb5d6609c897c80a62ff6f5cc64399631defc0119731b514">NATS_NO_MEMORY</a></div><div class="ttdef"><b>Definition:</b> status.h:102</div></div>
<div class="ttc" id="group__conn_mgt_group_html_gad81b603b84c0180aefc6d5ebad7f2a47"><div class="ttname"><a href="group__conn_mgt_group.html#gad81b603b84c0180aefc6d5ebad7f2a47">natsConnection_ProcessWriteEvent</a></div><div class="ttdeci">NATS_EXTERN void natsConnection_ProcessWriteEvent(natsConnection *nc)</div><div class="ttdoc">Process a write event when using external event loop. </div></div>
<div class="ttc" id="status_8h_html_a36c934157b663b7b5fb5d6609c897c80"><div class="ttname"><a href="status_8h.html#a36c934157b663b7b5fb5d6609c897c80">natsStatus</a></div><div class="ttdeci">natsStatus</div><div class="ttdoc">Status returned by most of the APIs. </div><div class="ttdef"><b>Definition:</b> status.h:49</div></div>
<div class="ttc" id="status_8h_html_a36c934157b663b7b5fb5d6609c897c80a40a08ae6ae17deaf390b1d0d7550791c"><div class="ttname"><a href="status_8h.html#a36c934157b663b7b5fb5d6609c897c80a40a08ae6ae17deaf390b1d0d7550791c">NATS_ERR</a></div><div class="ttdoc">Generic error. </div><div class="ttdef"><b>Definition:</b> status.h:53</div></div>
<div class="ttc" id="nats_8h_html_af798865ac824e5959987de0fe8d07383"><div class="ttname"><a href="nats_8h.html#af798865ac824e5959987de0fe8d07383">natsSock</a></div><div class="ttdeci">int natsSock</div><div class="ttdef"><b>Definition:</b> nats.h:50</div></div>
<div class="ttc" id="group__libevent_functions_html_gaac76f5937329a8650f69c6bd8af36cd5"><div class="ttname"><a href="group__libevent_functions.html#gaac76f5937329a8650f69c6bd8af36cd5">natsLibevent_Detach</a></div><div class="ttdeci">natsStatus natsLibevent_Detach(void *userData)</div><div class="ttdoc">The connection is closed, it can be safely detached. </div><div class="ttdef"><b>Definition:</b> libevent.h:214</div></div>
<div class="ttc" id="group__libevent_functions_html_ga195d269473332931fd0fede0bac3309e"><div class="ttname"><a href="group__libevent_functions.html#ga195d269473332931fd0fede0bac3309e">natsLibevent_Init</a></div><div class="ttdeci">void natsLibevent_Init(void)</div><div class="ttdoc">Initialize the adapter. </div><div class="ttdef"><b>Definition:</b> libevent.h:58</div></div>
<div class="ttc" id="group__libevent_functions_html_ga7ac99f326a59e5663ff66f5023c87091"><div class="ttname"><a href="group__libevent_functions.html#ga7ac99f326a59e5663ff66f5023c87091">natsLibevent_Write</a></div><div class="ttdeci">natsStatus natsLibevent_Write(void *userData, bool add)</div><div class="ttdoc">Start or stop polling on WRITE events. </div><div class="ttdef"><b>Definition:</b> libevent.h:192</div></div>
<div class="ttc" id="group__conn_mgt_group_html_gaa89c06e30e19ff361125bfc9114d89a8"><div class="ttname"><a href="group__conn_mgt_group.html#gaa89c06e30e19ff361125bfc9114d89a8">natsConnection_ProcessReadEvent</a></div><div class="ttdeci">NATS_EXTERN void natsConnection_ProcessReadEvent(natsConnection *nc)</div><div class="ttdoc">Process a read event when using external event loop. </div></div>
<div class="ttc" id="group__libevent_functions_html_ga30c00f21a5251ee9fde09c1f2b429cd2"><div class="ttname"><a href="group__libevent_functions.html#ga30c00f21a5251ee9fde09c1f2b429cd2">natsLibevent_Attach</a></div><div class="ttdeci">natsStatus natsLibevent_Attach(void **userData, void *loop, natsConnection *nc, natsSock socket)</div><div class="ttdoc">Attach a connection to the given event loop. </div><div class="ttdef"><b>Definition:</b> libevent.h:98</div></div>
<div class="ttc" id="status_8h_html_a36c934157b663b7b5fb5d6609c897c80a9cee6c417868ecaa69f99ff4f6576990"><div class="ttname"><a href="status_8h.html#a36c934157b663b7b5fb5d6609c897c80a9cee6c417868ecaa69f99ff4f6576990">NATS_OK</a></div><div class="ttdoc">Success. </div><div class="ttdef"><b>Definition:</b> status.h:51</div></div>
<div class="ttc" id="group__types_group_html_gaf88dca0a18efb5c5e994d265a9f04aec"><div class="ttname"><a href="group__types_group.html#gaf88dca0a18efb5c5e994d265a9f04aec">natsConnection</a></div><div class="ttdeci">struct __natsConnection natsConnection</div><div class="ttdoc">A connection to a NATS Server. </div><div class="ttdef"><b>Definition:</b> nats.h:102</div></div>
<div class="ttc" id="group__libevent_functions_html_ga8a14ce23b4f6ba3bf63369961f9a5552"><div class="ttname"><a href="group__libevent_functions.html#ga8a14ce23b4f6ba3bf63369961f9a5552">natsLibevent_Read</a></div><div class="ttdeci">natsStatus natsLibevent_Read(void *userData, bool add)</div><div class="ttdoc">Start or stop polling on READ events. </div><div class="ttdef"><b>Definition:</b> libevent.h:170</div></div>
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